/*
    This file is part of the substandard lisp implementation of Standard Lisp
    Copyright (C) 2011 Nicky Nickell

    substandard lisp is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program.  If not, see <http://www.gnu.org/licenses/>.
*/


std_leq = (a, env) ->
  args = homogenize_args(a)
  u = args[0].value
  v = args[1].value

  if args[0].type is TYPE_INTEGER
    comp = u.compare(v)
    return if comp is 0 or comp is -1 then T else NIL
  else
    return if u <= v then T else NIL

/*---
name: leq
arity: 2
rest: false
ftype: FTYPE_EXPR

synonyms:
  - '<='

argument-types:
  - CLASS_NUMBER
  - CLASS_NUMBER

argument-names:
  - U
  - V

doc: |
  returns T if U <= V otherwise returns NIL

tests: |
  (leq 0 1) -> T
  (leq 1 0) -> NIL
  (leq -1 0) -> T
  (leq 0 -1) -> NIL
  (leq 1 1) -> T
  (leq 0.1 1.1) -> T
  (leq 1.1 0.1) -> NIL
  (leq -1.1 0.1) -> T
  (leq 0.1 -1.1) -> NIL
  (leq 1.1 1.1) -> T
  (leq 0 0.1) -> T
  (leq 0.1 0) -> NIL
...*/
